Among the red canister variety of gelatin, there are yet even more decisions to be made! You have two options: kosher or porcine. Kosher meaning, pig-free and from cows only, and porcine which is primarily from pig parts (hide and bones).
A parallel port is an interface allowing a personal computer (PC) to transmit or receive data down multiple bundled cables to a peripheral device such as a printer. The most common parallel port is a printer port known as the Centronics port.
In computing, a serial port is a serial communication interface through which information transfers in or out one bit at a time (in contrast to a parallel port). Throughout most of the history of personal computers, data was transferred through serial ports to devices such as modems, terminals and various peripherals.